Electrical-socket seal.



1%. 863,847; PATENTED AUG. 20, 1907.

L. T. HATFIELD.

ELECTRICAL SOCKET SEAL. I APPLICATION rum) AUG.3,1906.

13 i Mean: /6

awe swap LLEW'ELL'YN T. HATFIELD, or SACRAMENTO, CALIFORNIA.

ELECTRICAL-SOGMT SEAL.

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Specification of Letters Patent.

Patented Aug. 20, 1907.

Application filed August 3,1906. aerial No. 329,119-

To all whom it may concern;

Be it known that I, LLEWELLYN T. HATFIELD, a citi zen of the United States, residing in Sacramento, in the county of Sacramento and State of California, have invented certain 'ew and useful Improvements in Electrical-Socketfieals, of which the following is a' specification. I

This invention relates to electrical socket seals.

In an application filed by m'bn the fourth day of October, 1905, serially numbered 281,290, I have claimed broadly a device for sealing sockets for electric lamps and other current consuming devices.

The present application has for an object to improve the form of the invention therein shown and claimed.

Other and further'objectswill appear in the following description and will be more particularly pointed out in the appended claims:

r In the-drawingsFigure 1 is a view of a spent or dummylamp held in the socket, parts being broken awayto show the manner of sealing the lamp in the. socket. Fig.2 isa sectional view showing a good lamp sealed in the socket, a non-conducting disk being interposed between a lamp contact and a socket contact. Fig. 3 is a sectionalview of another embodiment showing a plug fitting within a socket and sealed therein; Fig. 4 is a side elevation of the same embodiment; Fig. 5 is a sectional view of another form of plugfitted in a socket and sealed therein; and Fig. 6 is a sectional viewof still another form of'plug. Fig. 7 is" a detail view of the sealing means employed in Figs. land 2.

Referring more particularly to the embodiment shown in Fig; '1, 1 indicates a socket having one of its walls provided with an opening,'said opening having a narrow inner end 2 and an enlarged outer end 3 pro- ;vided with a contracted mouth 4. A spent or dummy lamp 5 having a plug 6 is fitted inthe socket and is provided with a recess 7 in its plug. To secure the lamp within the socket, a pin or key 8 of a length to fit at. the same time within the recess 7 and the mar row inner end of the opening in the socket, is passed into the said recess and the said opening, and is held in position against surreptitious removal by a seal 9 pressed into the large inner end of the opening. The pin or key 8 acts as a locking means fonthe dummy or spent lamp and prevents the removal ofthe same except upon the destruction of the seal.

Instead of employing a dummy or spent lamp, I may employ an operative lamp 11 as shown in Fig. 2. In this instance, a non-conductive disk 10 is interposed between a contact of the socket and a contact on the lamp. The .manner of securing the operative lamp in its socket is the same as employed in Fig. 1.

' passed about the socket until in the socket and locked therein by a wire 14 which is passed through the openings 12 and through atransverse opening 15 inthe plug. The ends of the wire are they meet, and aresecured together by a seal 16. i. i g

In Fig. 5, the socket 1" is not changed, and a plug 17, formed preferably of non-conducting material such as wood, is provided with external threads and is screwed into the socket. To hold the plug against surreptitious removal, the plug is provided with a transverse groove 18 in one endand a wire 19 is fitted in the groove and has its ends passed about the socket and secured together by a seal 20.

In Fig. 6, the socket 1 is not changed and the plug 21 is hollow, being formed of sheet metal or other sheet material. inner contact'of the socket, the'plug is provided with an annular flange or rib 22 which engages the wall of the socket and limits the inward movement of the' plug. The plug is locked in thesocket by a wire 23 which, after being passed through openings 24, in that part of the plug projecting from the'sockct, is wrapped about the socket in any suitable manner and has its ends secured by a seal 25.

In all embodiments, the destruction of the sea would be notice to the company or dealer that access -It will be noted that in all embodiments of my invention, a non-current consuming plug is fitted in the socket and locking meansholds the plug within the socket, the locking means being held by a seal. I

Having thus described my invention, what I claim and desire to secure by Letters Patent is:

.1. Thecombiria tlorrwlth an electrical socket, of a noncurrent consuming plug fitted in the socket, anda seal for the plug. l

2. The combination with an'electric'el socket, of a plug fittcd in the socket in spaced relation to one of the con tacts of the socket, and a seal for the plug. I a

3. The combination with the socket. a non-conducting plug fitted in the socket, and a seal for the plug.

The foregoing specification signed at Sacramento California this 9th day of July, i906.

LLEVELLYN T. HATFIELD.

In presence of two witnesses 'V. L. HATFIELD,

Cons BARNES.

So as to prevent the plug engaging the 

